Known plaintext - XOR

20 Points  

For this challenge you will need to decypher a simple XORed picture.

Author

Ryscrow,  

Level  Difficulty

Validations

3801 Challengers 4%

Note  Notation

1
2
3
4
5
178 Votes
To reach this part of the site please login

Solution 4 Solutions

Display solutions Submit a solution

Challenge Results Challenge Results

Pseudo Challenge Lang date
lvlup   Clair connu - XOR fr 15 February 2019 at 18:33
Pierre   Known plaintext - XOR en 15 February 2019 at 18:07
SassDream   Clair connu - XOR fr 14 February 2019 at 23:28
Arpenteur   Clair connu - XOR fr 13 February 2019 at 22:27
CookeREFRESHING   Clair connu - XOR fr 13 February 2019 at 19:35
narhein   Clair connu - XOR fr 13 February 2019 at 16:05
Jack skellington   Clair connu - XOR fr 12 February 2019 at 23:23
hsegni   Clair connu - XOR fr 12 February 2019 at 15:48
Den   Known plaintext - XOR en 12 February 2019 at 15:01
Poryg   Known plaintext - XOR en 11 February 2019 at 16:56

Challenges associated with this section 43 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 27% 31493 5 Xartrick 10
pas_valide Encoding - UU 21% 25065 5 g0uZ 10
pas_valide Hash - Message Digest 5 22% 25760 5 g0uZ 6
pas_valide Hash - SHA-2 11% 12880 5 koma 3
pas_valide Shift cipher 7% 7625 10 m31z0nyx 5
pas_valide Pixel Madness 6% 6184 15 Ryscrow 10
pas_valide ELF64 - PID encryption 4% 3666 15 Lu33Y 10
pas_valide File - PKZIP 4% 4571 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 6% 6030 15 Arod 4
pas_valide Known plaintext - XOR 4% 3801 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1421 20 Tosh 5
pas_valide File - Insecure storage 1 4% 4403 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 4106 20 Arod 3
pas_valide System - Android lock pattern 3% 2589 20 Silentd 3
pas_valide Transposition - Rail Fence 3% 2449 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 148 25 Tie21 1
pas_valide AES - ECB 1% 1035 25 cez40 4
pas_valide LFSR - Known plaintext 1% 151 25 Brissouille 1
pas_valide RSA - Factorisation 2% 1676 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 405 25 Zweisamkeit 3
pas_valide Service - Timing attack 2% 1289 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1427 25 koma 6
pas_valide Initialisation Vector 1% 749 25 manticore, notfound 3
pas_valide GEDEFU 1% 235 30 makhno 1
pas_valide RSA - Corrupted key V1 1% 91 30 blackndoor 1
pas_valide RSA - Continued fractions 1% 592 30 sambecks 1
pas_valide RSA - Common modulus 1% 506 30 franb 2
pas_valide Service - Hash length extension attack 1% 345 30 koma 1
pas_valide AES - 4 Rounds 1% 59 35 Cryptanalyse 0
pas_valide RSA - Padding 1% 109 35 Tosh 0
pas_valide AES128 - CTR 1% 342 40 Tosh 1
pas_valide Discrete logarithm problem 1% 439 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key V2 1% 69 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 502 40 franb 3
pas_valide AES - Fault attack #1 1% 29 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 90 50 peyman 1
pas_valide ECDHE 1% 92 60 Tosh 2
pas_valide Service - CBC Padding 1% 537 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 237 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 53 60 Cryptanalyse 2
pas_valide AES - Weaker variant 1% 21 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 47 75 Revenger 1
pas_valide AES - Fault attack #2 1% 22 80 Cryptanalyse 0